题目:
Using the mirrors left on the lunar surface by the Apollo missions, mirrors
allowing the Earth –Moon distance to be measured precisely by lasers, it
has been determined by scientists that the moon is moving from the Earth
at the almost imperceptible rate of three to four centimeters per year .
选项:
A、allowing the Earth -Moon distance to be measured precisely by lasers it has been determined by scientists that the moon is moving
B、allowing that the Earth-moon distance can be measured precisely lasers, scientists have been able to determine that the moon is moving
C、that allow the Earth-Moon distance to be measured precisely by lasers ,scientists have been able to determine that the moon is moving away
D、that allow for the Earth-Moon distance to be measured precisely by lasers ,it was determined by scientists that the Moon is moving away
E、that allow that the Earth-Moon distance can be measured precisely by lasers , scientists were able to determine that the moon is moving away
答案:
C